航空学报 > 1990, Vol. 11 Issue (3): 199-204

一维微裂纹的统计演化

柯孚久1, 祁祥麟1, 白以龙2, 李劲松2   

  1. 1. 北京航空航天大学 ;2. 中国科学院力学所
  • 收稿日期:1989-01-28 修回日期:1900-01-01 出版日期:1990-03-25 发布日期:1990-03-25

STATISTICAL EVOLUTION OF ONE DIMENSIONAL MICRO CRACKS

Ke Fujiu1, Qi Xianglin1, Bai Yilong2, Li Jinsong2   

  1. 1. Beijing University of Aeronautics and Astronautics;2. Institute of Mechanics, Chinese Academy of Sciences
  • Received:1989-01-28 Revised:1900-01-01 Online:1990-03-25 Published:1990-03-25

摘要: <正> 1.引言 由于组成统计微元的单个微裂纹,既不是古典的牛顿粒子,也不是量子的微观粒子,所以它们既不遵从古典力学的哈密顿方程,又不遵从量子力学的薛定谔方程,它们的运动规律一般由实验或先验模型来给出。本文从简化的、但抓住了物理实质的模型入手,给出了两种成核率函数,应用统计方法,通过计算分析,得出了一维微裂纹统计演化行为的物理图像。

关键词: 微裂纹, 成核, 演化

Abstract: Owing to tensile stress pulse results in spallation in materials, it is necessary to investigate the statistical evolution of micro-cracks. For this sake two nucleation rate functions are proposed. The details of statistical evolution of one dimensional micro-cracks are presented in this paper.

Key words: micro-cracks, nucleation, evolution